131202121 has 8 divisors (see below), whose sum is σ = 133125824. Its totient is φ = 129291120.

The previous prime is 131202089. The next prime is 131202139. The reversal of 131202121 is 121202131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131202121 - 2⁵ = 131202089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131202151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18715 + ... + 24751.

It is an arithmetic number, because the mean of its divisors is an integer number (16640728).

Almost surely, 2^131202121 is an apocalyptic number.

It is an amenable number.

131202121 is a deficient number, since it is larger than the sum of its proper divisors (1923703).

131202121 is a wasteful number, since it uses less digits than its factorization.

131202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6351.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 131202121 is about 11454.3494359130. The cubic root of 131202121 is about 508.1363752839.

Adding to 131202121 its reverse (121202131), we get a palindrome (252404252).

The spelling of 131202121 in words is "one hundred thirty-one million, two hundred two thousand, one hundred twenty-one".